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Full-Text Articles in Life Sciences

Effects Of Composition And Separation Techniques On The Structure Of Aggregates In The Milk Fat Globular Membrane, Tristan Dilbeck, Jose Ibarra, Rafael Jimenez-Flores, Tracey Nguyen Aug 2013

Effects Of Composition And Separation Techniques On The Structure Of Aggregates In The Milk Fat Globular Membrane, Tristan Dilbeck, Jose Ibarra, Rafael Jimenez-Flores, Tracey Nguyen

STAR Program Research Presentations

The milk fat globular membrane (MFGM) is a complex structure composed mainly of phospholipids, sphingolipids, and membrane specific proteins. The composition and size of the MFGM differs based on the isolation, purification, and techniques used in analysis of the membrane as well as physiological, chemical, and mechanical factors present during its creation. The purpose of this experiment is to analyze the effects of separation techniques and composition of lipids and proteins on the structure of aggregates in the MFGM. The aggregates found in whey protein isolate (95% pure whey protein), whey buttermilk (whey protein and phospholipids), and sweet buttermilk (whey …


Characterization Of Bacillus Bacterial Strains; Optimum Growth Temperature, Proteolytic And Lipolytic Activity, Jamie Anne Boring Aug 2013

Characterization Of Bacillus Bacterial Strains; Optimum Growth Temperature, Proteolytic And Lipolytic Activity, Jamie Anne Boring

STAR Program Research Presentations

Characterization of Bacillus bacterial strains is an important step in identifying and removing biofilms contaminating processing equipment. These biofilms lead to large amounts of spores in the final product. Strains that produce spoilage enzymes cause off-flavors, structural defects and reduced shelf life of milk products. Using four treatments, we determined the best growth protocol for each strain to use in future experiments. Treatment 1: 80 o C heat shock and 32 o C 24hr incubation, Treatment 2: 80o C/ 55 o C, Treatment 3: 100 o C/ 32 o C, Treatment 4: 100 o C/ 55 o C. Our …


Editorial: The Nutrition Transition- The Same, But Different, Aydin Nazmi, C. Monteiro Apr 2013

Editorial: The Nutrition Transition- The Same, But Different, Aydin Nazmi, C. Monteiro

Food Science and Nutrition

No abstract provided.


Using Stable Isotope Analysis Of Zooplankton To Document Trophic And Biogeochemical Changes In The San Francisco Estuary, Steven C. Westbrook, Julien Moderan Jan 2013

Using Stable Isotope Analysis Of Zooplankton To Document Trophic And Biogeochemical Changes In The San Francisco Estuary, Steven C. Westbrook, Julien Moderan

STAR Program Research Presentations

Zooplankton represent a vital link between phytoplankton and fish, like the endangered Delta Smelt. Human interferences (nitrates from waste water, flow alteration, invasive species introduction…) have altered the structure of the San Francisco Estuary (SFE) ecosystem. We use stable isotope analysis to improve our knowledge of the planktonic food web in the SFE and gain insights into its evolution over the past decades. We use the ratios of certain isotopes (Nitrogen, Carbon, Sulfur, etc.) in different species of zooplankton to tell us what it is feeding on as well as the trophic level it feeds in. My research focused on …